CN102582843B - Simulation system for ice-formation condition on ground - Google Patents
Simulation system for ice-formation condition on ground Download PDFInfo
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- CN102582843B CN102582843B CN201110357934.7A CN201110357934A CN102582843B CN 102582843 B CN102582843 B CN 102582843B CN 201110357934 A CN201110357934 A CN 201110357934A CN 102582843 B CN102582843 B CN 102582843B
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Abstract
The invention provides a kind of simulation system for ice-formation condition on ground, for in outdoor low temperature environment to test article anti-/ deicing capability verifies, described analog system comprises atomising installation, and it comprises spray lance and the associated ping thereof of band nozzle, and described associated ping comprises air inlet pipe and coolant inlet pipe; Water service, it is communicated with described coolant inlet pipe, and the water through purification process is delivered to described nozzle; Compressed air source unit, it is communicated with described air inlet pipe, and the high pressure air through purification process is delivered to described nozzle; Air source apparatus, it simulates wind-tunnel, so that uniform and stable air stream is delivered to described atomising installation; And measure and control device, it controls whole analog system, and shows test parameters in real time.Adopt simulation system for ice-formation condition on ground of the present invention, the meteorological conditions of ground pogonip can be simulated in outdoor low temperature environment, produce the water smoke that Liquid water content and drop diameter can regulate, for verify such as nacelle of airplane anti-/ deicing capability provides strong guarantee.
Description
Technical field
The present invention relates to a kind of simulation system for ice-formation condition on ground, particularly relate to a kind of in outdoor low temperature environment to test article anti-/ simulation system for ice-formation condition on ground verified of deicing capability.
Background technology
In the Airworthiness Certification process of Large Civil Aircraft, 1093 (b) (2) clause in FAR25 portion and CCAR25 portion requires that applicant must show under the condition of ground pogonip weather to office side, and nacelle anti icing system possesses enough anti-icing abilities.Therefore applicant needs to carry out a test, to verify that aircraft runs into pogonip sky and in the process needing wait to take off, freezes produce in engine inlets leading edge in course line operation process.
Icing meteorology condition required in seaworthiness clause is difficult to search out in natural environment.In order to break through the restriction of environmental conditions, external civil aircraft model can use the large-scale climate cell of the military to test, but does not domesticly still possess correlation test condition.
Summary of the invention
Main purpose of the present invention is to provide a kind of analog system simulating ice-formation condition in ground, outdoor low temperature environment, the water smoke that this analog system generation Liquid water content (LWC) and drop diameter (MVD) can regulate, near atomized water spray to test article (engine inlets of such as aircraft), can guarantee that aircraft can carry out the test required by clause in an outdoor environment.
In order to achieve the above object, simulation system for ice-formation condition on ground provided by the invention comprises: atomising installation, and it comprises spray lance and the associated ping thereof of band nozzle, and described associated ping comprises air inlet pipe and coolant inlet pipe; Water service, it is communicated with described coolant inlet pipe, and the water through purification process is delivered to described nozzle; Compressed air source unit, it is communicated with described air inlet pipe, and the high pressure air through purification process is delivered to described nozzle; Air source apparatus, it simulates wind-tunnel, with mist device of disputing described in being delivered to by uniform and stable air stream; And measure and control device, it controls whole analog system, and shows test parameters in real time.
Preferably, described atomising installation comprises multiple spray lances in the whole cross section of cover butter part, and each spray lance has aerofoil profile envelope surface.Further, can be provided with insulation jacket between described aerofoil profile envelope surface and described associated ping, described associated ping can be provided with electrical heat tracing layer.
Preferably, described water service comprises water purification plant, reserve tank and corresponding water supply line, water pump and valve.Wherein, electric heater can be connected with in described reserve tank.
Preferably, described compressed air source unit comprises air intake filter, Air compressor and buffer tank and corresponding air feed connecting line and valve.Further, described compressed air source unit also can comprise compound type low-grade fever dryer and electric heater.
Preferably, described air source apparatus comprises collection section, power section, diffuser and settling chamber, and the entrance of wherein said power section is provided with grille guard, is provided with anti-separation net in described diffuser, is provided with honeycombs in described settling chamber.
Further, described analog system also comprises transport and supports the vehicle-mounted and supporting adn fixing device of fixing each device, and it comprises independent trailer and support leg device.
Further, described analog system also comprises arrangement for adjusting height, and it carries described atomising installation and described air source apparatus, and by electric pushrod lifting mechanism, described atomising installation and described air source apparatus is elevated to desired height.
Adopt simulation system for ice-formation condition on ground of the present invention, the water smoke that LWC and MVD meets the demands can be produced under outdoor low temperature environment, and additionally use heating and thermal insulation measure in analog system to guarantee smooth and easy ejection hot water mist, avoid in course of injection and freeze, effectively can simulate ground pogonip meteorological conditions, for checking nacelle of airplane anti-/ deicing capability provides strong guarantee.
Accompanying drawing explanation
More multiple features of the present invention and advantage are by by understanding better below in conjunction with the further description of accompanying drawing to detailed description of the invention.Wherein:
Fig. 1 a is the schematic cross-section according to the atomising installation in the simulation system for ice-formation condition on ground of the present invention one preferred implementation;
Fig. 1 b is the atomising installation schematic cross-section from another viewpoint shown in Fig. 1 a, shows air inlet pipe and coolant inlet pipe;
Fig. 2 is the schematic cross-section of the air source apparatus according to the preferred embodiment of the present invention in simulation system for ice-formation condition on ground;
Fig. 3 a is the schematic diagram of the arrangement for adjusting height according to the preferred embodiment of the present invention in simulation system for ice-formation condition on ground;
Fig. 3 b is another schematic diagram of the arrangement for adjusting height shown in Fig. 3 a;
Fig. 4 is the composition schematic diagram of simulation system for ice-formation condition on ground according to the preferred embodiment of the present invention.
Detailed description of the invention
Simulation system for ice-formation condition on ground according to the preferred embodiment of the present invention will be specifically described below.Simulation system for ice-formation condition on ground of the present invention mainly comprises atomising installation 100, water service 200, compressed air source unit 300, air source apparatus 400 and realizes analogue enlargement to these devices and show the measure and control device 500 of test parameters in real time.
First see Fig. 1 a and Fig. 1 b, it illustrates according to atomising installation 100 of the present invention and associated ping thereof.The Main Function of this atomising installation forms the artificial clouds needed for test, and ensure that particle diameter and Liquid water content reach the index of test determination, with meet to test article such as aero-engine anti-/ requirement of the accuracy of deicing test results.Different atomizers can produce different atomizing effects, what technical scheme of the present invention adopted is two fluid air-blast atomization modes, its principle utilizes pressurized air spray from nozzle at a high speed and mix with the purified water that another passage is carried, by air pressure gap alternate with water two, aqueous water is dispersed into droplet.
Based on above-mentioned principle, atomising installation 100 of the present invention comprises multiple spray lances 102 and support frame 103, air inlet pipe 104 and the coolant inlet pipe 104 ' of band nozzle 101.The nozzle 101 of multiple spray lance 102 is directly towards the testing section of test article 600 (Fig. 4), and spray lance preferably adopts aerofoil profile envelope surface, thus makes the steady air current by profile.Each pipeline can be provided with electrical heat tracing layer, also can be provided with insulation jacket between described aerofoil profile envelope surface and each pipeline to play insulation effect, avoid occurring icing phenomenon in spray process.Certainly, nozzle 101 also can additionally be provided with electric heating chuck.In low temperature test process, nozzle 101 keeps for gaseity, and in nozzle, gas passage surrounds aquaporin (gas bag water), and this also can be avoided nozzle to freeze further.
The air source apparatus of simulation wind-tunnel directly aims at above-mentioned atomising installation, in order to uniform and stable air stream is delivered to described atomising installation.Fig. 2 shows the air source apparatus 400 according to a kind of embodiment, and it is made up of collection section 401, power section 402, diffuser 403 and settling chamber 404 4 part.Power section 402 is provided with fan, and is provided with one deck grille guard 405 in entrance and breaks fan to prevent aspirated foreign body.One deck anti-separation net 406 is installed in diffuser 403 be separated to prevent air-flow.In settling chamber 404, one deck honeycombs 407 can be installed and stream turbulence to reduce.At the extreme end of air source apparatus 400, also can be provided with spraying grid 408, like this, multiple spray lance can be placed on the correspondence position of spraying grid, with the whole cross section of cover butter part.In the air source apparatus 400 of this simulation wind-tunnel, fan makes air enter the settling chamber 404 of wind-tunnel from left end collection section 401 to right-hand member diffuser 403 air blast.The honeycombs 407 of settling chamber 404 make air-flow obtain combing with and even, and in namely experimental section sprays grid 408, form that flow direction is consistent, the uniform steady air flow of speed, to obtain the aerodynamic experiment data acted on test article.Above-mentioned spray lance adopts aerofoil profile envelope surface, can promote the stable of air-flow further.
According to the present invention, be communicated with water service 200 and compressed air source unit 300 respectively at the air inlet pipe 104 of atomising installation 100 and coolant inlet pipe 104 ' place.Now see Fig. 4, the chief component according to simulation system for ice-formation condition on ground of the present invention can be it illustrates.The Main Function of water service 200 carries out purification process to tap water, uses water resistance rate and reach certain requirement, and by heating, pressurization, the nozzle 101 delivered on atomising installation 100 by certain flow requirement uses.This water service 200 mainly comprises water purification plant 201, reserve tank 202 and corresponding water supply line, water pump and valve.Wherein, the effect of water purification plant 201 is the icing core removed in tap water, can not freeze in below zero to make the pure water of supply.Further, in described reserve tank 202, also can be connected with electric heater, this further avoid the generation of icing phenomenon.
The Main Function of compressed air source unit 300 provides the pure high pressure air with uniform temperature, in order to be atomized purified water to the nozzle 101 on atomising installation 100.This compressed air source unit 300 is primarily of air intake filter 301, Air compressor and buffer tank 302 and the corresponding composition such as air feed connecting line and various valves.In order to the moisture removed in air and prevent from freezing in spray process, also compound type low-grade fever dryer and electric heater can be provided with.
The Main Function of measure and control device 500 controls whole analog system, comprises the adjustment of wind tunnel speed, the start of lifting mechanism, water supply and supply gas pressure, and the test parameters that display is all in real time.This measure and control device is primarily of compositions such as car-mounted computer, Programmable Logic Controller, frequency-conversion control cabinet, variable-frequency motor, atomising installation control housings, and these component parts should be well known to those skilled in the art, and do not repeat them here.It is worth mentioning that, can be provided with ice-formation condition tester 501 in measure and control device 500, in order to the icing parameter in read test environment at any time, this is of great advantage concerning carrying out exactly smoothly ice-formation condition on ground analogue test.
According to a kind of embodiment, analog system of the present invention also can comprise transport and support the vehicle-mounted and supporting adn fixing device of fixing described analog system, and this device is primarily of independent trailer and support leg device composition.The Main Function of independent trailer to facilitate movement to dispute the position of mist device, air source apparatus, water supply and compressed air source unit, measure and control device etc. before the test, and trailer is designed with general mechanical interface, directly can be connected with aircraft trailer.The effect of support leg device is then in test and transportation, after the position of each experimental set-up is determined, is fixed on ground or transport trolley by device by supporting leg.
According to a kind of embodiment, analog system of the present invention also can comprise arrangement for adjusting height, and its Main Function is that atomising installation and associated ping thereof and air source apparatus are elevated to suitable height, to meet the test requirements document that tail hangs driving engine.The frame mode that this arrangement for adjusting height preferably adopts electric pushrod to be elevated.Fig. 3 a and Fig. 3 b schematically illustrates so a kind of embodiment, wherein, the lifting push rod 702 that arrangement for adjusting height 700 comprises riser guide 701 and can slide along this riser guide 701, and drive motor 703 is connected to lifting push rod 702.In this embodiment, the drop-gear box 704 be electrically connected with drive motor also can be set.Certainly, the mode realizing highly regulating is not limited to embodiment shown in figure, such as, also can adopt the up-down mode of drag chain slide rail.
Simplified summary adopts simulation system for ice-formation condition on ground of the present invention to carry out the process of test operation below, specifically can comprise:
1, each device of analog system is assembled;
2, use the position of trailer adjustment analog machine, use support leg device to be fixed on the ground by analog machine;
3, connect the general supply of analog machine, initialization measure and control device, starts to carry out data logging;
4, by the injection reserve tank of purifying waste water through purifying water process, switch on power and heat;
5, open compressed air source unit, and make the force value in Air compressor and buffer tank maintain certain level;
6, by the electronic controlled height adjustment adjustment atomising installation of measure and control device and the adjustable height of air source apparatus, to meet test requirements document;
7, open air source apparatus, make wind speed maintain certain level;
8, open atomising installation, by air feed and the pressure of supply water of adjustable spraying device, the water smoke of ejection is met the demands;
9, the icing parameter in environment is read at any time by ice-formation condition tester;
10, atomising installation is closed after end of test;
11, air source apparatus is closed;
12, the height of atomising installation and air source apparatus is reduced to initial position;
13, the power supply of air source apparatus and reserve tank is cut off;
14, close measure and control device, close general supply.
Technology contents of the present invention and technical characterstic disclose as above, but are appreciated that under creative ideas of the present invention, and those skilled in the art can make various changes said structure and improve, but all belongs to protection scope of the present invention.Will be appreciated that simulation system for ice-formation condition on ground of the present invention is applicable to the various test article needing to test anti-/ deicing capability, but not be only limitted to the inlet channel leading edge of aero-engine.The description of above-described embodiment is only exemplary instead of restrictive, and protection scope of the present invention determined by claim.
Claims (7)
1. simulation system for ice-formation condition on ground, in outdoor low temperature environment to test article anti-/ deicing capability verifies, described analog system comprises:
Atomising installation, it comprises spray lance and the associated ping thereof of band nozzle, and described associated ping comprises air inlet pipe and coolant inlet pipe, and it also comprises multiple spray lances in the whole cross section of cover butter part, and each spray lance has aerofoil profile envelope surface;
Water service, it is communicated with described coolant inlet pipe, and the water through purification process is delivered to described nozzle;
Compressed air source unit, it is communicated with described air inlet pipe, and the high pressure air through purification process is delivered to described nozzle;
Air source apparatus, it simulates wind-tunnel, so that uniform and stable air stream is delivered to described atomising installation, described air source apparatus comprises collection section, power section, diffuser and settling chamber, the entrance of wherein said power section is provided with grille guard, anti-separation net is installed in described diffuser, in described settling chamber, honeycombs is installed; And
Measure and control device, it controls whole analog system, comprises ice-formation condition tester, and for showing test parameters in real time;
Described analog system also comprises transport and supports the vehicle-mounted and supporting adn fixing device of fixing each device, and it comprises independent trailer and support leg device.
2. simulation system for ice-formation condition on ground according to claim 1, is characterized in that, be provided with insulation jacket between described aerofoil profile envelope surface and described associated ping, described associated ping is provided with electrical heat tracing layer.
3. simulation system for ice-formation condition on ground according to claim 1, is characterized in that, described water service comprises water purification plant, reserve tank, water supply line, water pump and valve.
4. simulation system for ice-formation condition on ground according to claim 3, is characterized in that, is connected with electric heater in described reserve tank.
5. simulation system for ice-formation condition on ground according to claim 1, is characterized in that, described compressed air source unit comprises air intake filter, Air compressor and buffer tank, air feed connecting line and valve.
6. simulation system for ice-formation condition on ground according to claim 5, is characterized in that, described compressed air source unit also comprises compound type low-grade fever dryer and electric heater.
7. simulation system for ice-formation condition on ground according to claim 1, it is characterized in that, described analog system also comprises arrangement for adjusting height, it carries described atomising installation and described air source apparatus, and by electric pushrod lifting mechanism, described atomising installation and described air source apparatus is elevated to desired height.
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| CN201110357934.7A CN102582843B (en) | 2011-11-11 | 2011-11-11 | Simulation system for ice-formation condition on ground |
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| CN201110357934.7A CN102582843B (en) | 2011-11-11 | 2011-11-11 | Simulation system for ice-formation condition on ground |
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| CN102582843B true CN102582843B (en) | 2016-03-30 |
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